A.monitoring signal
B.inverse signal
C.reverse signal
D.feedback signal
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A.prevent main circuit overload
B.protect the circuit breaker blowout coil
C.prevent alternator motorization
D.prevent low voltage tripout
A.good insulation
B.bad insulation
C.high insulation power factor
D.a high slot discharge factor
A.one thousandth (10 to the -3rd power)
B.one millionth ( 10 to the -6th power)
C.one billionth ( 10 to the -9th power)
D.one trillionth (10 to the -12th power)
A.without switches on it
B.with insulated switches and no exposed terminals
C.without circuit breakers
D.without safety hand nails nor rubber mats
A.larger than the greatest branch resistance
B.smaller than the lowest branch resistance
C.equal to the sum of the individual branch resistances
D.one-half the sum of the individual branch resistances
最新試題
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
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（） is not installed on the main switchboar.